Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1989-07-11
1991-06-04
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
250226, 209580, G01N 904
Patent
active
050216457
ABSTRACT:
A device for photoelectrically sensing the color of a target object includes two more light sources having different characteristic ranges of chromaticity and at least one photosensitive element which receives light from the light sources after it has reflected off of the target object. A logic circuit serves to serially energize the light sources and receive resultant sample signals from the photosensitive elements. The logic circuit then generates a resultant signal as a function of the various sample signals and compares the resultant signal with a predetermined reference standard. If the difference therebetween exceeds a tolerance limit, the control circuit will output a reject signal.
REFERENCES:
patent: 3526777 (1970-09-01), Robinson
patent: 3910701 (1975-10-01), Henderson et al.
patent: 3914601 (1975-10-01), Hoover et al.
patent: 4003660 (1977-01-01), Christie Jr. et al.
patent: 4093991 (1978-06-01), Christie Jr. et al.
patent: 4529308 (1985-07-01), Rife
patent: 4558786 (1985-12-01), Lane
patent: 4699273 (1987-10-01), Suggi-Liverani et al.
patent: 4711580 (1987-12-01), Venable
patent: 4716285 (1987-12-01), Konishi
patent: 4784275 (1988-11-01), Fridge
patent: 4812904 (1989-03-01), Maring et al.
patent: 4820915 (1989-04-01), Hamakawa et al.
patent: 4823185 (1989-04-01), Miyamoto et al.
patent: 4917500 (1990-04-01), Lugos
AEG Aktiengesellschaft Product Brochure, "Photo-Electronics A Convincing Manufacturing Programme", Dated 02/87.
PRC Krochmann GMBH Brochure, "Colorimeter 420, Data Sheet May 1987".
LMT Lichtmesstechnik GMBH Berlin Brochure, "LMT Products 1987".
Handbook of Optics, Optical Society of America, Walter G. Driscoll, ed., McGraw Hill, 1978, pp. 9-1 Thru 9-40.
BVD Bilddatenverarbeiting, Prof. Dr. Robert Massen, Brochure "Colour & Shape".
ESD: The Electronic System Design Magazine, Jan. 1988, p. 38 et seq. Imaging and Graphics Article.
Siemens, Optoelectronic Data Book, 1987/88, Preliminary Data Sheets LDB5410, pp. 5-13-5-14 and "Blue Light Emitting Silicon-Carbide Diodes-Materials, Technology, Characteristics" by Dr. Class Wayrick, pp. 11-75-11-77.
Duncan Eugene F.
Satula Keith O.
Schuchmann Russell P.
Eaton Corporation
Nelms David C.
Shami Khaled
Vande Zande L. G.
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